The NBA champion Oklahoma City Thunder have agreed a five-year contract extension worth up to $287 million with 24-year-old All-Star forward Jalen Williams, ESPN reported Thursday.ESPN cited Williams's agents in reporting the extension of Williams's rookie contract -- which makes the 24-year-old the latest key piece of Oklahoma City's title run to commit to the Thunder long-term.

Jalen Williams hit a playoff high of 40 points during Game 5 of the Thunder v. Pacers Finals series, and has contributed to the meteoric rise of the OKC franchise on a national and worldwide scale. Williams averaged almost 27 minutes of active playtime per finals game and posted an average of 34.